fix: [AAP-23882] Add unique together constraint for organization and …

…team name

src/aap_eda/api/serializers/team.py

@@ -12,6 +12,7 @@
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 from rest_framework import serializers
+from rest_framework.validators import UniqueTogetherValidator
 
 from aap_eda.api.serializers.organization import OrganizationRefSerializer
 from aap_eda.core import models, validators
@@ -56,6 +57,14 @@ class Meta:
             "description",
             "organization_id",
         ]
+        validators = [
+            UniqueTogetherValidator(
+                queryset=models.Team.objects.all(),
+                fields=["organization_id", "name"],
+                message="Team with this name already exists in "
+                "the organization.",
+            )
+        ]
 
     def validate(self, data):
         self.validate_shared_resource()

tests/integration/api/test_team.py

@@ -121,6 +121,22 @@ def test_create_team_forbidden(
     assert response.status_code == status.HTTP_403_FORBIDDEN
 
 
+@pytest.mark.django_db
+def test_create_team_unique_name_constraint(
+    use_shared_resource_setting,
+    default_organization: models.Organization,
+    default_team: models.Team,
+    admin_client: APIClient,
+):
+    data_in = {
+        "name": default_team.name,
+        "description": "Test Team",
+        "organization_id": default_organization.id,
+    }
+    response = admin_client.post(f"{api_url_v1}/teams/", data=data_in)
+    assert response.status_code == status.HTTP_400_BAD_REQUEST
+
+
 @pytest.mark.django_db
 def test_retrieve_team(default_team: models.Team, admin_client: APIClient):
     response = admin_client.get(f"{api_url_v1}/teams/{default_team.id}/")